公开(公告)号：US20230236155A1

公开(公告)日：2023-07-27

申请号：US18011214

申请日：2021-05-31

Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

Inventor： Kui Yao ,  Weng Heng Liew ,  Qingqing Ke

IPC: G01N29/34 ,  G01N29/04

CPC classification number: G01N29/348 ,  G01N29/043 ,  G01N2291/0422

Abstract: A light-acoustic system and method for detecting an anomaly in a structure are provided. The system includes a light source configured to emit an excitation light and at least one excitation element attached to a surface of a structure. The at least one excitation element includes a photostrictive material and is configured to receive the excitation light for generating an oscillating strain. The oscillating strain generates an acoustic wave in the structure. The system also includes a detector configured to detect the acoustic wave.